"You released a piece of information that you had picked up from the confidential police information system (COPS) and passed it on to your brother," Mr Gormly said.

"That's correct," the officer replied.

At one point, the officer demanded Mr Gormly address him as senior constable because "I earned that rank".

Sen Const Pham is also accused of texting his brother-in-law, asking him to advise another man to clear out any drugs, money or stolen goods from premises that Fairfield detectives had planned to raid.

Sen Const Pham acknowledged the text came from his phone but said he did not send it and had no knowledge of the message.

The PIC also intercepted two mobile phone calls in May between Sen Const Pham and his brother, in which he asked him to stage a break-and-enter at his Lansvale home, where his brother-in-law and his de facto's parents also lived.

Sen Con Pham told his brother that his brother-in-law knew a lot of "junkies", hung out with drug dealers and had more than $100,000 in cash stashed in his wardrobe.

His brother refused to participate.

"It was an offer to your brother to engage in a break-and-enter and split the proceeds," Mr Gormly said.

Sen Const Pham said it was a joke to impress his brother.

In his opening statement, Mr Gormly stated that Sen Con Pham had been in a de facto relationship with Bich Tuyen Kha since 2000, during which time Ms Kha had married and divorced a Vietnamese national and had later married another Vietnamese man.

The first man had gained permanent residency before a divorce in 2008 and the second man's uncle had paid $30,000 to the officer for the sham marriage in 2010, Mr Gormly said.

Evidence showed neither of the men had ever lived with Ms Kha, the PIC heard.

In April this year, Sen Con Pham began an application for residency in Australia for a woman he said he had proposed to in Vietnam.

In 2006, he and Ms Kha had a large wedding ceremony in Sydney, but did not certify the marriage in NSW and were not legally required to do so.

They had a child in 2011, the PIC heard, but the birth certificate recorded Ms Kha's second husband as the father to avoid any issues with his impending permanent residency in Australia, the inquiry was told.

Sen Const Pham, who was a JP, certified the birth certificate.

He was also recorded on CCTV depositing at his local bank $18,900 in cash which he borrowed from his brother-in-law.

The hearings continue on Tuesday.

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